Genes are thought to contribute a certain amount to the cause of autism but it's not 100 per cent. It might be about 60 per cent genetic. So there are going to be environmental factors that mediate the impact of autism.

I think it's particularly clear in borderline personality disorder (BPD) that there's a strong association between early environmental deprivation and neglect and abuse and later outcome of BPD.

I think it's particularly clear in borderline personality disorder (BPD) that there's a strong association between early environmental deprivation and neglect and abuse and later outcome of BPD.